[src/content] Apply automatic range checks to enum types across IPC .

This is part of a long-running background task to remove the remaining
uses of the unchecked IPC_ENUM_TRAITS() macro.

BUG=246708

Review URL: https://codereview.chromium.org/601153002

Cr-Commit-Position: refs/heads/master@{#297221}

content/common/navigation_gesture.h

@@ -16,6 +16,7 @@ enum NavigationGesture {
   NavigationGestureAuto,
   // Initial state.
   NavigationGestureUnknown,
+  NavigationGestureLast = NavigationGestureUnknown
 };
 
 }  // namespace content

content/common/view_messages.h

@@ -83,8 +83,11 @@ IPC_ENUM_TRAITS(WindowContainerType)
 IPC_ENUM_TRAITS(content::FaviconURL::IconType)
 IPC_ENUM_TRAITS(content::FileChooserParams::Mode)
 IPC_ENUM_TRAITS(content::MenuItem::Type)
-IPC_ENUM_TRAITS(content::NavigationGesture)
-IPC_ENUM_TRAITS(content::PageZoom)
+IPC_ENUM_TRAITS_MAX_VALUE(content::NavigationGesture,
+                          content::NavigationGestureLast)
+IPC_ENUM_TRAITS_MIN_MAX_VALUE(content::PageZoom,
+                              content::PageZoom::PAGE_ZOOM_OUT,
+                              content::PageZoom::PAGE_ZOOM_IN)
 IPC_ENUM_TRAITS(gfx::FontRenderParams::Hinting)
 IPC_ENUM_TRAITS(gfx::FontRenderParams::SubpixelRendering)
 IPC_ENUM_TRAITS_MAX_VALUE(content::TapMultipleTargetsStrategy,